444232140 has 144 divisors (see below), whose sum is σ = 1399985664. Its totient is φ = 105114240.

The previous prime is 444232123. The next prime is 444232163. The reversal of 444232140 is 41232444.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 444232140.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 311469 + ... + 312891.

Almost surely, 2^444232140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444232140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699992832).

444232140 is an abundant number, since it is smaller than the sum of its proper divisors (955753524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444232140 is a wasteful number, since it uses less digits than its factorization.

444232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 444232140 is about 21076.8152243170. The cubic root of 444232140 is about 763.0212950546.

Adding to 444232140 its reverse (41232444), we get a palindrome (485464584).

The spelling of 444232140 in words is "four hundred forty-four million, two hundred thirty-two thousand, one hundred forty".